| 基于非递归结构的多级余弦CIC滤波器 |
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| 引用本文： | 李功福,石玉,赵宝林.基于非递归结构的多级余弦CIC滤波器[J].电子科技,2013,26(2):17-18,21. |
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| 作者姓名： | 李功福 石玉 赵宝林 |
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| 作者单位： | (电子科技大学 微电子与固体电子学院,四川 成都 610054) |
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| 摘 要： | 由于CIC抽取滤波器的实现无需使用乘法器与存储器,而使其具有快速变换采样的特点且便于实现,在软件无线电中得到广泛应用。由于传统的CIC抽取滤波器的线性性较差,即带外抑制不够且带内失真严重。文中提出了基于级联的余弦滤波器以优化传统的CIC抽取滤波器性能,通过提升余弦滤波器的滚降对阻带的压制及多级变速来提高其效率与线性性,从而达到优化目的,并通过仿真证明了方法的有效性。
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| 关 键 词： | CIC滤波器 余弦滤波器 非递归结构 |
Multistage CIC Cosine Filter Based on Recursive Structure |
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| LI Gongfu
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SHI Yu
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ZHAO Baolin.Multistage CIC Cosine Filter Based on Recursive Structure[J].Electronic Science and Technology,2013,26(2):17-18,21. |
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| Authors: | LI Gongfu SHI Yu ZHAO Baolin |
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| Affiliation: | (School of Microelectronics and Solid State Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China) |
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| Abstract: | Since its realization does not require the use of multipliers and memory and that it has fast transform sample characteristics,the CIC filter is widely used in software radio.The traditional CIC filter is poor in linearity,namely insufficient band rejection and serious in-band distortion.Cascaded cosine filter is proposed to optimize the traditional CIC decimation filter performance by raising cosine filter roll-off of the stop band suppression and multistage speed to improve its efficiency and linearity.Simulation proves the validity of our method. |
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| Keywords: | CIC filter cosine filter the recursive structure |
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